Alarm-lock.



M. SHBI'NMAN.

ALARM Loox. YAIPLIUATIOIII FILED SEPT. 29,*1008.

Patented June 6,1911. i

2 SHEETS-,SHEET 1.

` M. SHEINMAN.

ALARM Locri.v .APPLICATION ILED SEPT. 29, 1908.

Patented June 6,1911.

2 SHEETS-SHEET 2.

.y mvg/umn muws Shuman a er i Q au Arronnfys V WTNESSES:

. UNITED STATES PATENT OFFICE.

MORRIS' SHEINMAN, 0F NEW YORK, N. Y.

ALARM-LOCK.

Specification of Letters ,Patent Patented J une fr. 1 o1 1 Application led September 29, 1908. Serial No. 455,299.'

To all whom it may concern:

Be it known that I, MORRIS SHEINMAN, a citizen of the United States, and a resident of New York, countv and State of New York, have invented certain new and useful Improvements in AlarmjLocks, of which the following is a full, clear, and exact descri ation.

T is invention relates more particularly to a lock applied torloors which will automatically soundan alarm or otherwise signal when the lock is tampered with.

The primary object of the invention is to provide a simple and eiiicient lock in which the usual bolt may be made to coperate with mechanism in such' a way that an alarm or signal will be given immediately the door is opened, in case a burglar shoulda attempt to pry the door with a chisel or other tool, or to cut the bolt, but which will permit the mechanism to so act with reiaf tion to the bolt that the said bolt may be operated by a key or the means usually employed for throwing the' bolt without sound- Y ing the alarm.

Another objects of the invention is'to providesim'ple and efficient mechanism which is adapted to automatically 'close a normally pen elect-ric circuit in which, a bell oiother slgnal is included, thereby providing safety means to indicate that the door has beenl opened in an irregular way.

A further object of the invention is to provide a device in which two cylinder locks adapted to 4be operated by the same key form a parti-hereof, one of which is carried by the door and the-other by the device, and which serve to permit the bolt to be thrown either to a locking; or unlocked position.

A`sti1l further object of the invention is to provide a simple and eicient lock in which the parts may be readily made and assembled.

With these and other objects in view, the invention will be hereinafter more' partielllarly described Vwith reference to the accornpanying drawings, which form a part 'of this s ecifcation, arid will then be pointed'out in t e claims at the end of the description.

In .the drawings, Figure l is a rear elevation of one form of lock embodying my invention. Fi 2 is a view showing the cover late remov and the bolt thrown to an unocked position. lFig. 3 is a view showing the me anism fon closing an electric circuit to sound an alarm, the bolt being renoved. Fig. 4t is a detail view of the bolt. Flg. 5 is a detail plan of the bolt. Fig., 6 is a sectional plan view on a larger scale. Fig. 7 is a detail perspective view of the tumbler?? Fig. 8 is an elevation of the lock, showing' diagrammaticallythe electric circuit and an alarm. Fig. 9 is a sectional View somewhat similar to Fig. 6, the boltxbeing thrown to a locked position. Eig. 10 1s a transverse section, taken on the line Xe-X of Fig. 9. Fig. 1 1 is a view looking at the interior of the cylinder lock attached to the door; and Fig. 12 is an elevation of the bolt looking at the side opposite to that shown in Figs. 2 and 4.

The casing 10 of the lock may be of any suitable construction. As shown it Vhas a member 11 in which the mechanism is located and which issubstantially box-shaped and has its inner surface covered by a plate member 12 which may be secured thereto by screws or otherwise,and serves to hold the mechanism within the casing in the usual manner. The casing may be held to the door 13 by screws and movable in the casing is a bolt 14. This bolt has an engaging part 15 adaptedJto be moved in the keeper 16 which is held to the door jainb 16n as usual, and carried by the bolt is a tumbler 17. The tumbler 17 is ivotally held at 18 tothe body portion 19 ofsaid bolt, and said tumbler is normally forced inward by a spring 20, one end of which is held to the tumbler and the other end rests against a lug or projection 21 projecting from the body portion 19. The body ofthe bolt' is provided with an opening '22 therethrough and this Vopening has an extended slot-like part 23 which fits about a lug or projection 24 carried by bolt in its movement, and said opening has an enlarged substantially oval-shaped part 25 and a slot-like part 26 atsubstantially right angles to the part 23 and in which an arm or projecting part 27 of the tumbler 17 is adapted to fit. On opposite sides .of the slot-like part26 are lugs or engaging parts 27a and 28 between which the part 27 is adaptedto move When the tumbler or dog is moved on its pivot, and said tumbler is provided with a recess or slot'29 which is adapted to lit about the projection 27 and is provided with a projecting part or enga ingl portion 30 forming a. recess 31 in whic is i the lock casing and which serves to guide the adapted to fit the lug 24 of the casingl' `When the tumbler 17 is moved onvits pivot of the tumbler free of the lug 24, so that the ltumbler 'and bolt may be moved bodily together to a locking position, in which case the edge or side y32 will engage t-he lug or projection 24 on the op osite side thereof so that the bolt will be he d against movement in its locked osition, unless the tumbler is again released? v To automatically closean electric circuit and to sound an alarm or signal and prevent the door from being opened or the bolt from being moved or otherwise tampered with except by the proper key, I arrange within the casing an element or member 33.. This membei' 33l is slidingly held in the casing and is movable independently o f the bolt 14 and has a part 34 in which is a slot35, and said ineinber or element 33 may have its inward movenient limited by the lng or projection 36, which with the lug or projection 37 of the casing, serves as a fastening means for the plate 12 and also as a guide for the-bolt 14 during the movementthereof, said plate 12 being provided with an opening in which the outer end of the liig 24 is adapted to fit. A pin or projection 38 extends from one side of the bolt` 14 and has its end entering the slot 35 of the member 33 so that the said member may have a movement independent relatively to that of the bolt, but which may be moved with the bolt when the latter is' thrown in either direction by the proper means. in form and has a head or part 39 which is adapted to engage the outer edge 40 of the keeper 16, Fig. 9, when the bolt is forced to a locked position, and tending normally to force the member or device 33 outward is a lever or element 41. .This lever 41 is pivoted at 42 to the lock casing and has one end rounded, asat. 43, and adapted to lit a recess in the part- 44and the other end of said lever is round, as at 45, and is adapted to tit a recess in a slidable device or element 46. The device 46 may be bar-like in form and is slotted at one edge, as at 47, to fit about the -lug or projection 37 and .to have a limited movement in the lock casing, and said device 46 is normally vforced in one direction by a spring 48, one end of which rests against one wall of the- 4casing and the other end. against the device. This device is normally y forced inwardby the' spring 48 and tends to force the member 33 out-ward. so that the said member 33. will follow the bolt when thrown to a locked position, but will be prevented from moving tol an extreme throw by the reason of the edge 40 of 'the keeV er 16, andl when the bolt is thrown teggan un 'ocked osition, the said member 33fwill be move to This member 33 may be plate-like the position shown in Fig. 3 by reason of the pin or projection 38.engaging the end' of the slot 35, and this forces the device or bar 46 against the action of the spring 48.

The bar or device 46' is held against the inner surface of the cover plate member 12' of the casing and is notched or cut away, as at '49, so as to be guided by the lug or projection 50 of the bolt 14 which is notched at one end for this purpose, and said bar 46 is further held to slide in the casing by a lug or projection 51` Fig. 12, which rests upon the surface ofl said bar or device 46. 14 is provided with a wing or ribbed portion 52 which is adapted to engage the lever 41 and member 33 serving to movably hold the same againsttlie casing plate .12. The bar The bolt or device 46 serves as a contact and for this purpose has one end bent, as at 52, -which is adapted to engage the end of a contact 53. The contact 53 may have its free end yielding and is secured to the casing so as to be insulated therefrom, and connected to this contact is a wii'e 54. A wire 55 is electrically connected to the casing 10, as by a screw 56, andthese wires form a part of an electric circuit 56 in which is included a battery 57 and a bell 58 or other form of signal.

It will be seen that when' the bolt is in an unlocked position, the member 33 will be forced inward, andlin this position will hold the contact 52* of the device 46- away trom4 the contact 53, as shown in Figs. 2 and '3, so that the alarm will not ring. but on theoutward movement or throw of t-he member 33 due to the action of thel spring 48, the bar 46 will be forced inward so that the end 52"l will engage the contact 53 and closethe circuit, unless tlie outward throw of said member 33 is limited by the action of the keeper 16 as shown best in Fig. 9. It an attempt is, made to force the door by means of a chisel or other tool or cuttingr the bolt or otherwise, and the door is forcedslightly inward on its hinges, the member 33 will be released so that it will be forced to its extreme outward throw, and during this action a contact will be made between the bar 46 and contact 53, thereby completing the circuit. By this means any attempt-to open the door except to fit into a drum or cylinder 60 which is rotatably held vin 'a sleeve 61 when it is desired to throw the bolt from the inside, and

said' sleeve is held against rotation in a boss 62for'mng a part of the lock casing. The

drum or cylinder 60 is normally held against rotation except when released by the key and this mechanism is substantially the same as -inthe Yale type of lock and may be of any other desired character. An arm 63 is held to rotate with the cylindrical lock member 60, and this arm is adapte-d to engage the projecting part 27 of the tumbler or dog 17 to release thevsame from the lug 2450 thatthe bolt may be thrown in either direction. A second cylindrical lock 64 is held to the door in the usual way and this lock has a rotary cylinder, drum or member 65 which f is adapted to be moved by the same key 59 as already described, and movable with this drum is a projecting part 66 which enters a s101567 in a rotary sleeve or element'68 which is held to the cover plate 12. This sleeve 68 carries an arm 69 similar to the arm 63, and said arm is adapted to operate the dog to release the `same andto throw the bolt inward or outward in the same way as said arm 63. As the bolt is thrown outward, the member 33 will `follow the same by reason of-theaction of the spring 48 and device 46 as already described, and will be stopped by the keeper so that the circuit will `remain open until the door is tampered with. If the door is opened, except by the roper key, this will `perm-it the member or evice 33 to be forced erating as shown to move the bolt, the samekey may be employed on either side of the ldoor, and by having the inner cylindrical lock, instead of a handle or knob, it will be diicult for the lock' to be tampered with should a hole be made in the door in an i tampered with and cple attempt to operate the lock from the inside. The mechanism for releasing the roT tary member of each of the cylindrical locks by the key is not shown as the same is of, the usual construction.

From the foregoing it will be seen that a simple and efiicient lock is ,provided whereby an alarm may be sounded when the door is `ned except bythe proper key; that by te means shown the same key may be employed for throwing the bolt from either the inside or outside of the door; that simple means is provided f or preventing tampering with the bolt of the lock; that the bolt may be operated by the proper means without causing the alarm to ring; and that lsaid lock may be readily made and assembled.

Having thus described my invention, I claim as new and desire t secure by LettersV Patent 1. In a lock, the combination with a casing, of a bolt, means whereby the bolt may be thrown to al locked or unlocked position, a keeper, a sliding member movable with the bolt and independently thereof, a sliding ,contact bar, means arranged intermediate said slidable member and contact bar Wherein the opposite direction, means tendingnormally to throw said contact bar inwardly and through said intermediate means to throw said slidablc member outwardly against said keeper, a contact adapted to be engaged by said contact bar, an alarm, and electrical connections including said alarm, the circuit through which is closed by the movement of said contact bar. l

2. In a lock, the combination with a casing, o f a bolt, means whereby the bolt may be thrown to locked `or unlocked position, Y

a keeper, a movable member located adjacent to the bolt and movable with and independently thereof, a sliding spring pressed contact bar, means arranged intermediate pendently ofv said bolt, a sliding contactibar, whereby the movement of one will throw the other in the opposite direction, an alarm, electrical connections including said alarm, and contact bar, the circuit through which is closed by the movement of said contact ar. f

3. In a lock, the combination with a casing, of a bolt, means whereby the bolt maybe thrown toa locked or unlockedposition, a keeper, a movable member located adjacent to the bolt and movable with andindependently'of said bolt, a sliding contact bar, means Varranged intermediate said movable member and contact bar whereby the movement ofl one will 'throw the other in the opposite direction,

mediate means throw said slidable member outwardly against said keeper, and alarm, the circuit through which is closed by said contact bar.

. 4c. The combination with a casing adapted to be attached to a door, of a bolt, means to throwthe bolt to a locked or unlocked position, an alarm, a movable member, and` means whereby the member may cause the alarm to sound whenV the door is opened comprising a' stationary contact, a slidable contact' bar, cooperating with said stationary contact, an actuating device between said movable member and said bar, and an electric circuit including said bar.

5, In a lock, the combination with a casing and a bolt, of means whereby the bolt may be thrown toa locked or unlocked po and, resiliently'A actuated means tending normallyto throw saidv con. tact bar inwardly, and through said inter`` an, alarm,` I electrical connections including said 7,5 l by the movement of one will throw the' other sition, a keeper ga member adapted to engage a. art of the keeper to limit the movement o said member, a slidingly held contact bar, a spring normally forcing said bar in one direction, a lever engaging the bar and member and ,serving to constrain the same to move in opposite directions, an electrical circuit, an alarm included in said circuit, and means whereb' the contact bar may be made to close t e circuit through the alarm. f

6. The combination with -a casing, of a bolt slidingljfmheld 'in said casing, means whereby, the

lt may be thrown to a locked or unlocked osition, a keeper, a member having a hea adaptedto engage the keeper to limit the movement of sai member when the bolt i'sthro'lvn to a locked position, said a projection carrie by the bolt and entering the s ot and ada ted to force the member away from the eeper when the bolt is member having a Sart provided with a slot,

thrown to a released position, a sliding bar 'the bur, a projection on the' bolt also serving to guide the bar, and a second projection on the bolt serving to hold the lever 1n position in the casing. I

7. The combination with a casing, of a bolt slidingly held in said casing, means whereby -said bolt may be thrown to a locked or unlocked osition, a. keeper, a member having a hea adapted to engage the keeper to limit the movement of said member when Athe bolt is thrown in a locked position, said member having a part provided with a slot, and a projection carrie entering the slot and adapted to force` the member away from the keeper when the said bolt is thrown to. a released position, an alarm, and a slidable bar operatively connected to said member and means controlled by said bar to sound the alarm when the member is -forced outward free of the keeper.

8. The combination with a casing, of a bolt slidingly held in said casing, means whereby said bolt may be thrown to a locked or unlocked position, a keeper, a member having a head adapted to engage the keeper to limit the movement of said member when the bolt is thrown in a locked position, said member having a part provided with a slot, a projection carried by the bolt and enter- .ing the slot and adapted to force the member awaygfrom the keeper when the said bolt is thrown to a released position, a sliding bar forming a contact and guided within the casing, a lever pivotally held in the casing and having its ends engaging parts of the member and said'bar to constrain the said member and bar to move in opposite directions, a contact arranged in the path of said bar, a spring tending normally to force the bar into engagement with said contact, anl

by the bolt and electric circuit, and a signal kin said'circuit c and said circuit adapted to be Vclosed by the bar when the same is forced inwardly ythe spring.

, Signed at New York in the county of New.

York and State of New York this 23rd day of September A. D. 1908.

` MORRIS SHElNMAN.

Witnesses:

LOUIS COHEN, Monms KA'rz.

Copiel of this patent may be obtained for tive cents each, by addressing the Commissioner of Patents, Washington, D. C. v 

